This OptoSigma Rack and Pinion stage usesa Dovetail guide method for repeat linearity. The surface of the stage is 38x65mm and has seven holes threaded 1/4-20UNC available for mounting your fixture. The base plate has 4 countersunk holes available for securing the stage to a work surface. The finish is black chrome which helps to reduce light reflection. The stage travels along an X axis with estimated 20µm straightness, and a travel range of ±15mm from center. Load capacity for this stage is rated at 147N. Actual item is shown; sold as pictured.